Nut-lock.



O. W. SHAW.

NUT LOOK.

APPLICATION FILED JUNE 13, 1911,

Patented Apr. 2, 1912.

now,

FFTCE.

CLARENCE W. SHAW, 0F JOHNSTONVILLE, CALIFORNIA.

NUT-LOCK.

Specification of Letters Patent.

Patented Apr. 2, 1912.

Application filed June 13, 1911. Serial No. 632,931.

To all whom it may concern Be it known that I, CLARENCE WV. Srmw, acitizen of the United States, residing at J ohnstonville, in the countyof Lassen and State of California, have invented new and usefulImprovements in Nut-Locks, of which the following is a specification.

This invention relates to improvements in nut locks and has particularreference to devices for locking the nuts on vehicle spindles wherebythe said nuts are prevented from turning off, and has for one of itsobjects to provide a device of this character which will be easy tomanipulate, cheap to manufacture and efficient and positive inoperation.

Another object of the present invention is to provide a locking devicefor nuts which is housed within a cap nut and resiliently held inlocking engagement with the screw threaded nut receiving member.

A further object of the present invention is to provide a lockingdevice, for securing the nuts upon the outer ends of spindles of vehicleaxles, comprehendingalocking plate adapted to be resiliently held inlooking engagement with the spindle and locked to the nut, and meanscarried by the said looking plate whereby said plate may be disengagedfrom the spindle independently of the nut.

With the above and other objects in view the invention consists in theconstruction, combination and arrangement of parts here inafter fullydescribed and claimed and illustrated in the accompanying drawing,wherein the preferred embodiment of the invention is shown, and whereinFigure 1 is a longitudinal sectional view through a spindle and nutillustrating the locking device in locked position. Fig. 2 is alongitudinal sectional view through a vehicle spindle and nutillustrating the locking device in unlocked position. Fig. 3 is a detailperspective view of the locking device, and Fig. 4 is a detachedperspective view illustrating the parts in their relative positions.

Referring more particularly to the accompanying drawing, the numeral 1designates the axle spindle, the outer end of which is ciroumferentiallyreduced to provide a screw threaded tenon 2, the end face of which isformed with grooves 3, preferably two in number and intersecting eachother on the longitudinal central line of the tenon 2.

The nut designated by the numeral 4 is interiorly screw threaded as at 5whereby to receive the tenon of the vehicle spindle 1 and is flanged onits surface next the vehicle spindle to receive the washer 6. The nut41:, which is a cap nut, has its end wall 5 formed with an opening 7which is of irregular contour and is provided with a wall having asemi-circular end portion 8 and a rectangular portion 9, which isprovided with centrally located serrations 10.

Formed interiorly of the nut and eX- tending longitudinally thereof area pair of diametrically opposed key-ways or grooves 11 adapted toreceive the combined guiding and locking keys 12 of the locking device,designated in general by the numeral 14. The locking device 1 1preferably comprises a locking plate 15 having upstanding locking lugs16 formed integral therewith, the said lugs 16 being adapted to enterthe grooves 3 formed on the outer end of the tenon. The locking platealso has circumferentially off-set therefrom a pair of combined guidingand locking keys 12, these keys 12 being preferably extensions of themembers 16, and formed integral with said members. The locking plate 15has formed centrally thereof an opening 17 adapted to receive the screwthreaded member 18. The member 18 is provided with a head 19 and isadapted to be rigidly secured to the locking plate, said head beingadapted to snugly fit between the under-cut terminals 20 formed in theconfronting ends of the looking keys 1G. The free end of the threadedmember 18 is adaptedto receive the lock releasing nut 22. This nut 22comprises a knurled head 23 circumferentially reduced as at 2 1 to enterthe opening 7 of the nut 4.

Formed integral with the reduced portion 2 1 and off-set therefrom is,what- I term a rest 25 the outer surface of which is serrated as at 27to frictionally engage the serrations 10 formed in the end wall of thenut -1 for more securely holding the locking device, in its lockingposition, against accidental displacement. A spring 26, preferably aconical helical spring, is disposed within the nut and is adapted toencircle the screw threaded member 18 in the operative positions of theparts. This spring has one end in engagement with the end wall of thenut, and its other end engaging the inner face of the locking plate.

In the operative positions of the parts the locking device 14.- isdisposed within. the nut and guided in longitudinal, 'i'iioveinent bymeans of the keys engaging the grooves 11 and is also iocked to thenutby said grooves and keys. The screw threaded member 18 beingencircled by the spring 26 and projecting through the opening 7 formedin the end wall of the nut, is adapted to receive the lock releasing nut22, which is interiorly screw threaded for this purpose. 7 Asillustrated in Fig. 1 of the drawing the rest is disposed within'thepart 9 of the opening 7 in the end wall of the nut and the locking plate15 is forced inward by the spring 26 causing the locking lugs 16 toengage the grooves 3 in the tenon 2 of the spindle 1 thereby lockingsaid nut and spindle relatively to one another. 'From Fig. 2 of thedrawing it will be manifest that, by exerting an outward pull on thelock releasing a nut 22, the locking device 1 1 is withdrawn from thegrooves 8 against the tension of the spring 26 thereby releasing thelocking device and allowingthe nut to be removed from the spindle. Bygiving the lock releasing nut 22, when in its outermost position, a halfturn to the left or right the rest 25 engages the end wall of the nutthereby holding said locking tion.

I do not limit myself to the exact details of construction as herein setforth as various changes may be made within the scope of the claims andwithout departing from the spirit of the invention or sacrificing any ofthe advantages thereof.

Having thus described my invention what I claim and desire to secure byLetters Patent is 1. In combination, a threaded member, a

/ nut threaded thereon, and provided with diametrically opposedlongitudinal grooves, a locking device disposed Within the nut, meansfor holding said device in looking endevice in its unlockedposigagenient with the threaded member, keys carried by said lockingdevice and engaging said iongitudinaigroo es, an means for, hiovliigsaid locking device longitudinally of the nut to disengage the same fromthe threaded member, said keys and grooves guiding said locking devicein its long1tud1- nal movement. p I p 2. The combination with a ineinberhav ing a threaded end and provided with a transverse roove, of alocking deylce 1ncluding a pdtte, means carried said pla s and adaptedto engage the groove,-

111114 threaded on said member and honsing sa locking device and formedinteriorly longitudinal key-ways, keys carried by plate and adapted toengage said key-ways, and means arranged exiteriorly o the nut formoving the said locking device longitudinally of the nut and out ofengagement with the groove, said keys and key ways guiding said lockingdevice in its lOIlg'ltUdlnal movement and preventing rotation Otthedevice independently of the nut.

3. The combination with a member hav-' inga threaded end, said end beingprovided with a trans-wisely disposed groove, of a locking deviceincludin' a plate, key mem bers formed oii said pits and adapted toenter said groove, a nut adapted to fit the threaded end of saidiiieiribeif and completely house said plate, means interposed betweenthe head of said nut and the plate tohold the locking device inengagementwitl the; member, said nut being formed interior'ly withlongitudinal keyways, keys carried by said plate and adapted to enter"said keyways, and means for moving said plate 1011- gitudinally of saidnut, said key-wztys and keys forming the guiding means of said plate inits longitudinal movement.

In testimony whereof I affix my signature in presence of two witnesses.

CLARENCE W. SHAW:- \Vitnesses:

HARRY B. PEARCE, W. H. SNYDER,

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

